Chemiresistive gas sensor based on spray pyrolyzed fluorine doped tin oxide films for trimethylamine detection

Authors

Laureen Ida M. Ballesteros ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Christopher Jude T. Vergara ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Armando S. Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Gas sensors based on nanocrystalline undoped tin oxide (SnO₂) and fluorine-doped tin oxide (SnO₂:F) thin films were prepared using an economical nebulized spray pyrolysis technique. The 0.3M precursor tin oxide solutions with varying fluorine doping concentrations (0, 20, and 40mol%) were deposited on glass substrates at 300^oC. The X-ray Diffraction (XRD) and scanning electron microscopy (SEM) analyses confirmed the formation of nanocrystalline rutile structured SnO₂ and SnO₂:F continuous films with particle sizes ranging from 173 nm to 452 nm. The SnO₂:F (40mol%) film based sensors exhibited an enhanced room temperature response to trimethylamine compared to its undoped counterpart.

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Issue

2016: Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2016-PA-07

Section

Poster Session PA

Published

2016-08-18

How to Cite

[1]

LIM Ballesteros, CJT Vergara, and AS Somintac, Chemiresistive gas sensor based on spray pyrolyzed fluorine doped tin oxide films for trimethylamine detection, Proceedings of the Samahang Pisika ng Pilipinas 34, SPP-2016-PA-07 (2016). URL: https://proceedings.spp-online.org/article/view/SPP-2016-PA-07.